<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>bootstrap</title>
    <link rel="stylesheet" href="lib/bootstrap.css">
    <script src="lib/bootstrap.js"></script>
</head>
<body>
    <!-- <div class="container">
        11111111111
    </div> -->
    <div class="container-fluid">
        <div class="row">
            <div class="col-3">1111111111</div>
            <div class="col-3">2222222222</div>
            <div class="col-3">3333333333</div>
            <div class="col-3">4444444444</div>
        </div>
        <div class="row">
            <div class="col">1111111111</div>
            <div class="col">2222222222</div>
            <div class="col">3333333333</div>
            <div class="col">4444444444</div>
        </div>
    </div>
</body>
</html>